[SCSI] iscsi class: remove host no argument from session creation callout

We do not need to have llds set the host no for the session's
parent, because we know the session's parent is going to be
the host. This removes it from the session creation callback
and converts the drivers.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/infiniband/ulp/iser/iscsi_iser.c

@@ -397,7 +397,7 @@ static void iscsi_iser_session_destroy(struct iscsi_cls_session *cls_session)
 static struct iscsi_cls_session *
 iscsi_iser_session_create(struct iscsi_endpoint *ep,
 			  uint16_t cmds_max, uint16_t qdepth,
-			  uint32_t initial_cmdsn, uint32_t *hostno)
+			  uint32_t initial_cmdsn)
 {
 	struct iscsi_cls_session *cls_session;
 	struct iscsi_session *session;
@@ -423,7 +423,6 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
 	if (iscsi_host_add(shost,
 			   ep ? ib_conn->device->ib_device->dma_device : NULL))
 		goto free_host;
-	*hostno = shost->host_no;
 
 	/*
 	 * we do not support setting can_queue cmd_per_lun from userspace yet

drivers/scsi/cxgb3i/cxgb3i_iscsi.c

@@ -334,13 +334,12 @@ static void cxgb3i_ep_disconnect(struct iscsi_endpoint *ep)
  * @cmds_max:		max # of commands
  * @qdepth:		scsi queue depth
  * @initial_cmdsn:	initial iscsi CMDSN for this session
- * @host_no:		pointer to return host no
  *
  * Creates a new iSCSI session
  */
 static struct iscsi_cls_session *
 cxgb3i_session_create(struct iscsi_endpoint *ep, u16 cmds_max, u16 qdepth,
-		      u32 initial_cmdsn, u32 *host_no)
+		      u32 initial_cmdsn)
 {
 	struct cxgb3i_endpoint *cep;
 	struct cxgb3i_hba *hba;
@@ -359,8 +358,6 @@ cxgb3i_session_create(struct iscsi_endpoint *ep, u16 cmds_max, u16 qdepth,
 	cxgb3i_api_debug("ep 0x%p, cep 0x%p, hba 0x%p.\n", ep, cep, hba);
 	BUG_ON(hba != iscsi_host_priv(shost));
 
-	*host_no = shost->host_no;
-
 	cls_session = iscsi_session_setup(&cxgb3i_iscsi_transport, shost,
 					  cmds_max,
 					  sizeof(struct iscsi_tcp_task) +

drivers/scsi/iscsi_tcp.c

@@ -765,8 +765,7 @@ iscsi_sw_tcp_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 
 static struct iscsi_cls_session *
 iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
-			    uint16_t qdepth, uint32_t initial_cmdsn,
-			    uint32_t *hostno)
+			    uint16_t qdepth, uint32_t initial_cmdsn)
 {
 	struct iscsi_cls_session *cls_session;
 	struct iscsi_session *session;
@@ -789,7 +788,6 @@ iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 
 	if (iscsi_host_add(shost, NULL))
 		goto free_host;
-	*hostno = shost->host_no;
 
 	cls_session = iscsi_session_setup(&iscsi_sw_tcp_transport, shost,
 					  cmds_max,

drivers/scsi/scsi_transport_iscsi.c

@@ -1197,14 +1197,15 @@ iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep,
 {
 	struct iscsi_transport *transport = priv->iscsi_transport;
 	struct iscsi_cls_session *session;
-	uint32_t host_no;
+	struct Scsi_Host *shost;
 
 	session = transport->create_session(ep, cmds_max, queue_depth,
-					    initial_cmdsn, &host_no);
+					    initial_cmdsn);
 	if (!session)
 		return -ENOMEM;
 
-	ev->r.c_session_ret.host_no = host_no;
+	shost = iscsi_session_to_shost(session);
+	ev->r.c_session_ret.host_no = shost->host_no;
 	ev->r.c_session_ret.sid = session->sid;
 	return 0;
 }

include/scsi/scsi_transport_iscsi.h

@@ -88,7 +88,7 @@ struct iscsi_transport {
 	uint64_t host_param_mask;
 	struct iscsi_cls_session *(*create_session) (struct iscsi_endpoint *ep,
 					uint16_t cmds_max, uint16_t qdepth,
-					uint32_t sn, uint32_t *hn);
+					uint32_t sn);
 	void (*destroy_session) (struct iscsi_cls_session *session);
 	struct iscsi_cls_conn *(*create_conn) (struct iscsi_cls_session *sess,
 				uint32_t cid);